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<title>MD_MAX72xx LED Matrix Arduino Library: Arduino LED Matrix Library</title>
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   <div id="projectname">MD_MAX72xx LED Matrix Arduino Library
   &#160;<span id="projectnumber">2.9</span>
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   <div id="projectbrief">Library to control connected  MAX72XX devices as a pixel array</div>
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<div class="title">Arduino LED Matrix Library </div>  </div>
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<div class="textblock"><h2>The Maxim 72xx LED Controller IC </h2>
<p>The MAX7219/MAX7221 are compact, serial input/output display drivers that interface microprocessors to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that stores each digit.</p>
<p>A 4-wire serial interface (SPI) allows the devices to be cascaded, with communications passed through the first device in the chain to all others. Individual elements may be addressed and updated without rewriting the entire display.</p>
<p>This library implements functions that allow the MAX72xx to be used for LED matrices (64 individual LEDs), allowing the programmer to use the LED matrix as a pixel device, displaying graphics elements much like any other pixel addressable display.</p>
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<h2>Copyright </h2>
<p>Copyright (C) 2012-16 Marco Colli. All rights reserved.</p>
<p>This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.</p>
<p>This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.</p>
<p>You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA </p>
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